9. shot (n.) a consecutive series of pictures that constitutes a unit of action in a film
The vacuum level is determined by the pressure differential between the evacuated volume and the surrounding atmosphere. Several units of measure can be used. Most refer to the height of a column of mercury â usually inches of mercury (in.-Hg) or millimeters of mercury (mm-Hg).
Vacuum Chamber Demonstration Script (GE Minimum Age 16) Materials Equipment : â¢ Vacuum Pump â¢ Bell Jar â¢ Extension Cord â¢ Power Strip with on/off switch â¢ Plastic cup (to put marshmallows in) â¢ Safety Shield Things to test in chamber : â¢ Marshmallows â¢ Balloons â¢ 150 or 200 ml beaker (for water w/food coloring) â¢ Bubble wrap â¢ Shaving Cream Safety Procedures (for old vacuum pump that uses the pulley system) â¢ Make sure the pulley is facing away from you and any objects that could be caught in its rotation. â¢ Have audience stand a minimum of 5 feet from the vacuum pump.